Electrical apparatus



y 1961 c. J. RADISH ETAL 2,982,439

ELECTRICAL APPARATUS Filed Sept. 13, 1957 INVENTOR Charles J. Radish 8Gerhard M.Stein.

YEW

. ATTORNEY m N m WITNESSES:

. Patented May 2, 19 61 .ELECTRICAL APPARATUS Charles J. Radish, WestSalem Township, Mercer County,

and Gerhard M. Stein, Sharon, Pa., assiguors to Westinghouse ElectricCorporation, East Pittsburgh, Pa., a corporation of Pennsylvania A FiledSept. 13, 1957, Ser. No. 683,893

3 Claims. (Cl. 220-66) This invention relates to electrical apparatusand more particularly to casings for electrical apparatus.

In a conventional casing or tank for electrical apparatus having arelatively thin cover, it is often necessary to provide means secured tosaid cover for stiffening or strengthening the cover. It is alsonecessary to provide means conventionally secured to the sidewall of thecasing for receiving lifting means. For a more compact design of thecasing and for other reasons which will be explained hereinafter, it isdesirable to provide a unitary means for strengthening the cover of acasing and for receiving means for lifting the complete apparatus.

An object of this invention is to provide a new and improved means forstiffening the cover of a casing which also serves to receive liftingmeans.

. Another object of this invention is to provide a new and improvedunitary cover brace and lifting hook for a casing.

Other objects of the invention will, in part, be obvious and will, inpart, appear hereinafter.

For a fuller understanding of the nature and objects of the invention,reference should be had to the following detailed description, taken inconnection with the accompanying drawing, in which:

Figure 1 is a top plan view illustrating an assembly in which the casingembodies the features of this invention;

Fig. 2 is a fragmentary view in section taken along the lines II-II ofFig. 1 of a casing embodying the teachings of this invention; and

Fig. 3 is a fragmentary view taken along the line III- III of Fig. 2illustrating the relative positions of the different parts of the casingwhen assembled.

Referring to the drawing and particularly to Figs. 1 and 2 thereof,there is illustrated a casing embodying the teachings of this invention,the casing 10 being disposed to cover electrical apparatus such as atransformer core and coil assembly (not shown). The casing 10 shown inthe drawing has a cover fitting over the upper edge of the sidewall 30of the casing. As shown in the drawing, a pair of bushings 22 extendsthrough the cover 20 to insulate the high voltage leads from anyelectrical apparatus protected by the casing 10. A pair of bushings 69may also extend through the cover 20 to insulate the low voltage leads.The cover 20 is secured to the sidewall 30 of the casing 10 by anysuitable means, such as welding.

In order to allow for entry into the casing 10 without removing thecover 20, a manhole opening 24 is provided in the cover 20.

Since the cover 20 is relatively thin, it is necessary to provide meansfor strengthening or stiffening the cover 20, specifically the members14, 16 and 18. The members 14, 16 and 18 include the inner portions 64,66 and 68, respectively, and the outer or extended portions 54, 56 and58 respectively. The inner portions 64, 66 and 68 of the members 14, 16and 18 are each secured to the underside 36 of the cover 20 by suitablemeans, such as welding. The outer or extended portions 54, 56 and 58 ofthe members 14, 16 and 18 are curved or adapted to receive liftingmeans. The outer portions 54, 56 and 58 are provided 2 V with the holes70 to receive special rods (not shown), for holding the casing 10stationary during shipping. As illustrated for a circular casing, themembers 14, 16 -and18, are spaced at substantially equal angles aroundthe cir-.

cumference of the cover 20. It is to be understood that the teachings ofthis invention may be embodied in a casing or tank for electricalapparatus which is not circular.

Referring to Figs. 2 and 3,.there is illustrated the,

method by which the outer or extended portions 54, 56 and 58 of themembers 14, 16 and 18, respectively, are brought through the cover 20and the sidewall 30 of the casing 10. The cover 20 is provided with arecess or opening 44 which matches the shape of and allows the outer orextended portion 58 of the member 18; to pass through the cover 20. Thesidewall 30 is provided with a through the sidewall 30,of the casing 10.The outer por-.

tions 54, 56- and 58 of the members14, 16 and 18, respectively, aresecured to the sidewall 30 and the cover 20 where the outer portions 54,56 and 58 pass through the sidewall 30 and the cover 20 by any suitablemeans, such as welding, which also helps to insure that the casing 10 iscompletely gas-tight and liquid-tight.

In summary, the members 14, 16 and 18 provide a unitary means forstiffening the cover 20 and receiving lifting means. In other words, themembers 14, 16 and 18 combine the functions of a cover brace and alifting hook on a conventional casing for electrical apparatus andtherefore provide a unitary cover brace and lifting hook. The members14, 16 and 18 allow a lifting force to be applied at the extreme top ofthe casing 10 and provide means for uniformly applying the lifting forceto the casing 10. This avoids distortion or deformation of the cover 20or the sidewall 30 of the casing 10 when lifting means are applied tothe members 14, 16 and 18.

Although the invention is illustrated in a casing including the threemembers 14, 16 and 18, it is to be understood that a casingincorporating any plurality of members similar to the members 14, 16 and18 may be provided. It is also to be understood that the members 14, 16and 18 may be secured to the cover 20 by means other than welding. Forexample, the members 14, 16 and 18 may be secured to the cover 20 bybolts.

The apparatus embodying the teachings of this invention has severaladvantages. For example, a casing incorporating the teachings of thisinvention allows a uniform lifting force to be applied around the top ofthe casing. In addition, a more compact casing is provided in whichseparate means for strengthening the cover and receiving lifting meansare eliminated and a unitary means for,

foregoing description or shown in the accompanying drawing shall beinterpreted as illustrative and not in a limiting sense.

We claim as our invention:

1. In a casing for electrical apparatus, the combination comprising, asubstantially circular cover irremovably secured to said casingsubstantially around the upper periphery of said casing, and a pluralityof bracing members secured to the underside of said cover, each of saidbracing members extending outwardly from a point located centrally ofsaid cover to a point outside the periphery of said cover member, theouter end of each of said bracing members being adapted to receive meansfor lifting said casing, said bracing members being disposed radially ofsaid cover at substantially equal angles around said cover in order thatlifting force applied to said bracing members is transmitted throughsaid bracing members and said cover to said casing along the upper periphery of said casing in a substantially uniform manner.

2. In a casing for electrical apparatus, the combination comprising, acover irremovably secured to said casing substantially around the upperperiphery thereof, and a plurality of bracing members secured to theunderside of said cover, each of said bracing members extendingoutwardly from a point located centrally of said cover to a pointoutside the periphery of said cover, the outer end of each of saidbracing members being adapted to receive means for lifting said casing,said bracing members being disposed substantially symmetrically withrespect to said cover in order that lifting force applied to saidbracing members is transmitted to the upper periphery of said casing ina substantially uniform manner.

3. In a casing for electrical apparatus having a sidewall portion, thecombination comprising a cover irremovably secured to said casingsubstantially around the upper periphery of said casing, and a pluralityof bracing members secured to the underside of said cover, each of saidbracing members extending outwardly from a point located centrally ofsaid cover to a point outside the periphery of said cover through saidsidewall portion and said cover, the outer end of each of said bracingmembers being adapted to receive external means for lifting said casing,said bracing members being disposed substantially symmetrically withrespect to said cover in order that lifting force applied to saidbracing members is transmitted substantially uniformly along the upperperiphery of saidcasing through said bracing members and said cover.

References Cited in the file of this patent UNITED STATES PATENTS567,764 Dixon Sept. 15, 1896 1,475,533 Bingay Nov. 27, 1923 1,594,674Krumm Aug. 3, 1926 1,639,786 Steinmetz Aug. 23, 1927 1,695,889 FinnenDec. 18, 1928 1,868,633 Fildes July 26, 1932 2,544,789 Horelick Mar. 13,1951 FOREIGN PATENTS 202,473 Great Britain Aug. 23, 1923

